Test Facilities Kit MK-980/PPS-5 is similar to Test
a. Test facilities Kit MK-980/PPS-5 is a portable test set
Facilities Kit MK-980A/PPS-5. Information in this
designed specifically to simplify the troubleshooting of
manual applies to both equipments unless otherwise
Radar Set AN/PPS-5 and similar radar sets by providing
test signals, input voltages, and jacks for connecting the
radar set to standard test equipment. By using the MK-
980/ PPS-5, many of the plug-in circuits of the radar set
can either be tested individually while they are operating
a. This manual describes Test Facilities Kit MK-
as part of the radar, or be removed from the radar set and
980/PPS-5 (fig. 1-1) and provides instructions for its
tested individually on the bench.
operation and maintenance. It includes operation under
b. The cable assembies of the MD-980/PPS-5 can also
usual and unusual conditions, cleaning and inspection of
be used independently: they can be used to make the
the equipment, replacement of parts, and repair. It also
plug-in circuits more accessible for testing. A plug-in
includes a maintenance allocation charge (App C), and
circuit, for example, can be removed from the radar set,
Repair Parts (App D).
one of test cables can be plugged into the connector on
b. Refer to the detailed operating procedures for using
the cable. The radar set can then be turned on, and the
Test Facilities Kit MK-980/PPS-5 or similar radar sets
parts of the circuit can be tested under conditions almost
(radar set) in the testing procedures for those equip-
like those under which it operates in the radar set.
c. The MK-980/PPS-5 can be plugged into a 115-volt
alternating current (at) line, or it can be powered by
1-2. Consolidated Index of Army Publications and Blank Forms
either Battery Box CY-3871/PPS-5 or Power Supply PP-
Refer to the latest issue of DA Pam 310-1 to determine
4450/PPS-5, which are part of Radar Set AN/PPS-5.
whether there are new editions, changes or additional
publications pertaining to the equipment.
1-5. Technical Characteristics
Input power . . . . . . . . . . . . . . . 115 volts ac 10 percent, 50 to 1,000 Hz,
0.9 ampere (amp) or 6 volts direct
a. Reports of Maintenance and Unsatisfactory Equip-
current (dc) 10 percent, 9 ampere.
ment. Department of the Army forms and procedures
Dc voltages . . +2KV (+0 -400), -2KV (+0 +400), -600 (+30
used for equipment maintenance will be those prescribed
-30), +300V (-0) +20), +110V (+6 -16,
by DA Pam738-750, as contained in Maintenance Manage-
+35V (+10-10, +12V (+0-4), -12V (-0 +4),
+V (+0.3 -0,9, -6V (-0.3 +0.9), -5V (+0.3
b. Report of Packaging and Handling Deficiencies. Fill
-0), +0.9), -5V (+0.3 -0), +39V (+0 -0.2),
and -3.9V (-0 +0.2).
out and forward SF 364 (Report of Discrepancy (ROD) as
Sync . . . . . . . . . . . . . . . . . . . . .4,000-Hz, 75 volts (+25 -30) amplitude,
prescribed in AR 735-11-2/DLAR 4140.55/ NAVMATINST
pulse with 5 to 25 usec.
4355.73A/AFR 400-54/MCO 4430.3F.
Trigger . . . . . . . . . . . . . . . . . . .4,000-Hz, 10 volts (+1 -1) amplltude, pulse
c. Discrepancy in Shipment Report (DISREP) (SF 361).
width 2 usec,
Fill out and forward Discrepancy in Shipment Report
Power supply sync. . . . . . . . .4,000-Hz, 8 volts (+1 -1) ampli-
tude, pulse width 2 usec.
(DISREP) (SF361) as prescribed in AR55-38/NAVSUPlNST
4610.33C/AFR75-18/MCO P4610.19D/DLAR 4500.15.
1-3.1. Reporting Equipment Improvement Recommendations
0o to 55, for continuous
operation; 0C to 71oC, for
If your Test Facilities Kit MK-980/PPS-5 or MK-980A/PPS-
5 needs improvement, let us know. Send us an EIR. You,
-62C to +85C.
range . . . . . . . . . . . . . . . . . .
the user, are the only one who can tell us what you don't
Altltude range . . . . . . . . . . . ..0 to 10,000 feet (operting); 0 to
like about your equipment. Let us know why you don't
50,000 feet (not operation).
like the design. Put it on an SF 368 (Quality Deficiency
Watertightness . . . . . . . Leakproof under 3 feet of water when the
Report). Mail it to Commander, US Army Communica-
cover IS on and latched.
tions-Electronics Command and Fort Monmouth, ATTN:
When the cover is unlatched, the control panel is not waterproof or
DRSEL-ME-MP, Fort Monmouth, New Jersey 07703. We'll
send you a reply.
Explosion . . . . . . . . . . . . . . ..Thls equipment is not to be operated in an
explosive-type atmosphere, it is not
1-3.3. Destruction of Army Electronics Materiel
sealed, and its swltches are not sealed.
Destruction of Army electronics materiel to prevent
Weight . . . . . . . . . . . . . . . . . ..55 pounds
enemy use shall be in accordance with TM 750-244-2.